Unravelling the effects of mechanical physiological conditioning on cardiac adipose tissue-derived progenitor cells in vitro and in silico

• Published in: Scientific reports 2018-01, Vol.8 (1), p.499-499, Article 499
• Main Authors: Llucià-Valldeperas, Aida, Bragós, Ramon, Soler-Botija, Carolina, Roura, Santiago, Gálvez-Montón, Carolina, Prat-Vidal, Cristina, Perea-Gil, Isaac, Bayes-Genis, Antoni
• Format: Article
• Language: English
• Subjects: 13/100; 13/107; 14/63; 38/77; 631/532; 692/4019; 82/80; Adipose tissue; Angiogenesis; Cardiac conditioning; Cardiology; Cell adhesion; Electronics in cardiology; Electrònica biomèdica; Electrònica en cardiologia; Enginyeria biomèdica; Genes; Heart attacks; Heart diseases; Humanities and Social Sciences; Immune response; Mechanical stimuli; multidisciplinary; Myocardial infarction; Neural networks; Neural stem cells; Physiology; Progenitor cells; Proteins; Science; Science (multidisciplinary); Secretome; Stem cells; Transcription factors; Àrees temàtiques de la UPC
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-017-18799-5

Mechanical conditioning is incompletely characterized for stimulating therapeutic cells within the physiological range. We sought to unravel the mechanism of action underlying mechanical conditioning of adipose tissue-derived progenitor cells (ATDPCs), both in vitro and in silico . Cardiac ATDPCs, grown on 3 different patterned surfaces, were mechanically stretched for 7 days at 1 Hz. A custom-designed, magnet-based, mechanical stimulator device was developed to apply ~10% mechanical stretching to monolayer cell cultures. Gene and protein analyses were performed for each cell type and condition. Cell supernatants were also collected to analyze secreted proteins and construct an artificial neural network. Gene and protein modulations were different for each surface pattern. After mechanostimulation, cardiac ATDPCs increased the expression of structural genes and there was a rising trend on cardiac transcription factors. Finally, secretome analyses revealed upregulation of proteins associated with both myocardial infarction and cardiac regeneration, such as regulators of the immune response, angiogenesis or cell adhesion. To conclude, mechanical conditioning of cardiac ATDPCs enhanced the expression of early and late cardiac genes in vitro . Additionally, in silico analyses of secreted proteins showed that mechanical stimulation of cardiac ATDPCs was highly associated with myocardial infarction and repair.